Transmission-gearing.



G. SITTMANN. TRANSMISSION GEARING.

APPLICATION FILED FEB- 20. l9l5.

THE COLUMBIA PLANOORAPH ,c0., WASHINGTON. D. c.

rinrrnn srarns Parana orricn.

GUSTAV SITTIVIANN, OF NEW YORK, N. Y.

TRANSMISSION-(BEARING.

, To all whom it may concern Be it known that I, GUsTAv SITTMANN,

a citizen of the United States, and resident of New York city, boroughof Brooklyn, in the county ofKings and State of New York, have inventedcertain new and useful Improvements in 'Transmission-Gearing, of whichthe following is a specification. The object of my invention ,is toprovide simple,compact and eliicient transmission gearing adapted torotate a driven member orshaft either forwardly or reversely asrequired.

My invention comprises novel details of improvement and combinations of.parts that will be more fully hereinafter set forth and then pointedout in the claims.

Reference is to be had to the accompanying drawings forming part hereof,wherein, Figure 1 is a substantially central section of my improvedtransmission gearing, taken substantially on the line 1,1, in Fig. 2;Fig. 2 is a cross section substantially on the line 2, 2, in Fig. 1;Fig. 3 is an enlarged sectional detail, Fig. 4: is a similar view atright angles to Fig. 3, and Fig. 5 is a de tail hereinafter referred to.

Similar numerals of reference indicate corresponding parts in theseveral views.

In the accompanying drawings the numeral l indicates a rotative member,which may be a suitably supported shaft to be driven by a motor, and 2indicates a second member in axial alinement with member 1. Member 2 maybe a suitably supported shaft utilized as a driven member.

At 3 is a suitable housing or casing supported concentrically withrespect to membets 1 and 2. The housing 3 is shown provided with a hub 3journaled upon member l and'having a cap or disk 4: shown mountedconcentrically with respect to member 2.; Cap 4 isshown' removablysecured to housing 3 by screws or bolts 5, whereby thepa'rts 3 and4Jrotate together.

Within housing 3 is a suitable concentrically disposed'shell or frame 6,shown having an internal flange 6 adapted to coact frictionally with theend orflange portion 1 of member 1 within the housing. The shell orframe 6 is adapted'to have longitudinal movement relatively to housing3, and to r0- tate therewith by means of a key 7 disposed between saidparts. Shell or frame 6 is disposed concentrically with respect to mempa ai h i sharp prpjeetiagni hin s Specification of Letters Patent.

Application filed. February 20, 1915. Serial No. 9,480.

shell, and said shell is provided with a bearmg 8 for said shaft. A gear9 secured upon member or shaft 2 meshes with a gear or pinion 10suitably journaled upon shell 6, eccentric to members 1 and 2. I haveshown sald pinion provided with gudgeons at its ends, one of whichgudgeons is journaled 1n the upright 6 of bearing 8 and the other ofwhich gudgeons is 1' ournaled in a bearing or collar 6 shown fitted inan opening in a wall of shell 6 and having ears 6 secured by screws inrecesses 6 in said wall (Figs. 3 and 5). After gear or pinion 10 hasbeen fitted in shell 6 bearing or collar 6 may be secured in place.

A drive rod or link 11 is pivotally connected with member or shaft 1 andwith gear 10, for which purpose I have shown a pin 12 pivotallvconnecting member or shaft 1 with rod or link 11 and a pin 13 pivotallyconnecting rod or link 11 with gear or pinion 10. I prefer to journalsaid pins in suitable apertures in member 1 and in gear or pinion 10, asillustrated in Figs. 3 and 4, and to slot the ends of said rod or link11 as illustrated at 11 to receive and have appropriate movement orplaywith respect to said pins. Said pins are also preferably flattened onopposite sides to receive the cor-- responding'forked or slotted end ofrod or link 11, whereby said pins may rotate in their bearings, therebyreducing friction and permitting proper relative movement of the parts.In order to reduce the dimensions of the gearing. I have shown mem beror shaft 1 as recessed at 1 to receive rod or link 11, which rod or linkpasses through the opening 6 in shell 6 within the flange 6 thereof,opposing the recess 1". Means are provided to lock shell 6 to housing 3for high speed or directrotation of members 1 and 2 together, for whichpurpose I have shown a friction disk or plate 14 loosely located betweencap 4 and shell 6, and to provide for friction and wear between suchparts one or more friction disks or plates 15 may be interposed betweendisk 14 and shell 6.. Means are provided for forcing disk or plate 14:towardshell 6, to push the latter toward member 1 or its flange 1*. Forthis purpose I have shown pins 16 slid- .ably supported by cap 4: andadapted to be form of a sleeve having a beveled or conelike portion 19"to coact with the levers or trated, serving as a hearing or bushing forsaid cap.

Any suitable means may be provided for shifting the clutch member 19,for which purpose I have shown a lever 20 having one or more-pins 21entering theannular groove '19 of the clutch member 19,- which lever isshown pivotally connected at 22 to a link 23 pivotally supported at 24:upon the housing. When lever 20 is moved to the right, as shown in Fig.1, the cone member 19 will separate or expand the levers '17, causingthepins 16 to push disk or plate 14 to frictionally unite shell 6 withmember or shaft 1 by pressure of the parts 6 and 1 together, whereby thegearing will rotate as a unit on direct drive, whereby the driving anddriven members will be rotated at the same speed. It will be understoodthat there is suflicient freedom for play between the'frictionalsurfaces of the parts 1*; 3 6, 15 and 14 to permit said parts to rotatefreely when not pressed together by the action of levers 17. lVhen thedriven member is to be reversed the clutch devices are releasedby'shifting the clutch member 19=to the left in Fig. 1, to releaselevers 17 from pins 16, and thereupon the h using 3 is to be retainedfrom rotation. To this end I have'showna strap or band 25 encirclinghousing 3, being shownretained in position thereon by projection 26 onsaid housing, which may be in the form of an annular flange, and by theadjacent projecting edge of 'cap 4. Band 25 is divided so that its endsmaybe drawn together to grasp housing 3 in any suitable manner. In theexample illustrated the ends of the band are respectively provided withears or lugs 27, 28 receiving pin or bolt29 on whichis journaled an arm30 that is pivotally connected by link 31 with'lever 20. As'shown inFig.2, ear 28'and arm 30 are shown having opposingcoactingcam-like faces28, 30, respectively, so arranged that'when the parts are in theposition shown in Fig. 1

band 25 will expand to permit free rotation of housing 3. When lever 20is moved sufficiently far to the left'in Fig. 1 to release shell6'from'fricti'onal coaction with memher 1, the link 31'will'swing arm 30sufficiently far to cause'the'cam-like faces 30?,

28 to tighten band 25 upon housing 3 to retainthe latter from rotation,whereupon continued rotation of member'or shaft 1 will cause rod or link11 to rotate on'its longitudinal axis, which in turn will rotate gear orpinion 10, (since shell 6 is now retained from rotation by reason of key7 between said shell andhousing- 3)";--whereby=-gear 9 driving anddriven members, a housing," a

shell within and connected to rotate withthe will be rotated, and member2 will rotate in a direction reverse to member 1. When lever 20 isadjusted to an intermediate position all the parts are free for idling.Ac- V i cording to the ratio of the gears 9, 10 the speed of reverserotation of member 2 from member 1 may be such as desired. F urthermore,it will be understood that member 2 gous relations, where the member 1may. be 3 a shaft driven by the-motor and the member 2 may be,-or maydrive, the propeller shaft, a simple operation of lever 20 in onedirectiontherebv serving-to connect the motor to the propeller fordirect drive: and a simple reverse movement of lever20 serving torelease members 1 and 2 from direct" drive and cause member 2 to bedrivenreversely to member 1 and at a slower speed. The transmissiongearing is light and simple in construction, hence. may bereadilysupportedbetween the-opposing endsof members or Shafts 1, 2. V

Changes may be made in the detailsof construction and arrangements "ofparts shown and described, as the same may be varied, within the scopeofthe appended claims, without departing from the spirit of theinvention.

Having now described my invention what I claim is r 1. A transmissiongearing comprising driving and driven members, a housing, a shellmovable within and-connected to r0.- tate with the housing, a gearcarried by said shell, a gear connected-with one' o'f'said members andcoactive with the first named gear, a rod operatively connecting'thefirst named gear with one-of s'aid members', means to cause said shellto connect said members to rotate together in the same direction, andmeans to limit rotation of some of-said parts. p

2. A transmissiongearing comprising ii 3;"A.:.. ransm1s'sion.- gearingcomprising 110 driving and driven members, a housing, a shell Within andconnected to rotate with the housing, a gear carried by said shell, agear connected with one of said members and coactive with the firstnamed gear, a rod operatively connecting the first named gear with oneof said members, said shell opposing the driving member, friction meansinterposed between the housing and the shell, and means to operate saidfriction means'to operatively connect the housing and shell.

4. A transmission gearing comprising axially disposed members, a housingc0ncen' trically disposed with respect to said members, a shell slidablewithin the housing and connected to rotate therewith, said shell and oneof said members opposing each other for operative engagement, a gearcarried by said shell eccentric to said members, a rod operativelyconnecting said gear with one of said members, a gear upon the other ofsaid members to coact with the first named gear, means to retain saidhousing from rotation, and means to operatively unite the housing andshell with one of said members.

5. A transmission gearing comprising axially disposed members, a housingconcentrically disposed with respect to said members, a shell slidablewithin the housing and connected to rotate therewith, said shell and oneof said members opposing each other for operative engagement, a gearcarried by said shell eccentric to said members, a rod operativelyconnecting said gear with one of said members, a gear upon the other ofsaid members to coact with the first named gear, a friction member toretain the housing from rotation, devices to unite the housing and shellwith one of said members. for rotation together, and means to operatesaid friction member and said devices successively to release thehousing while connecting the housing, shell and member together, andvice versa.

6. A transmission gearing comprising axially disposed members, a housingconcentrically disposed with respect to said members, a shell slidablewithin the housing and connected to rotate therewith, said shell and oneof said members opposing each other for operative engagement, a gearcarried by said shell eccentric to said members, a rod operativelyconnecting said gear with one of said members, a gear upon the other ofsaid members to coact with the first named gear, a band to retain thehousing from rotation, levers connected with the housing, means betweenthe levers and shell to frictionally unite the latter to one of saidmembers, a cone-like member upon the other of said first named membersto operate said levers, a lever to operate said cone-like member, anddevices operated by said lever to cause said band to grasp and releasesaid housing.

7. A transmission gearing comprising driving and driven members, a gearconnected with one of said members, a gear in mesh with the first namedgear, means to rotatively support the second named gear, a rodoperatively connecting the second named gear with the other of saidmembers, means to limit rotation of the second named gear around thefirst named gear, and friction means to unite said members for drivingone directly by the other separately from and without utilizing saidgears and rod.

Signed at New York city, in the county of New York and State of New Yorkthis 18th day of February, A. D. 1915.

GUSTAV SITTMANN.

Witnesses:

MARIE F. WAINRIGHT, T. F. Bommn.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. 0.

